Description: Four functions of measuring inner diameter, outer diameter, depth and step. Made of premium carbon steel material, anti-rust performance, Shock-Proof Easy to use, durable; with a case, easy to store and carry Measuring Range: 0-6"/0-150mm Resolution: 0.001 inch/0.02mm Specification: Length: Approx.23.3x7.5cm/9.17x2.95 inch Color: Silver Material: Carbon Steel Package Includes: 1 Piece Dial Caliper